NCERT Class 11 Mathematics Solutions: Chapter 6 –Linear Inequalities Miscellaneous Exercise Part 6

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In figure properties of inequalities are shown.

Properties of Inequalities

In figure properties of inequalities are shown.

1. IQ of a person is given by the formula , Where is mental age and is chronological age. If for a group of years old children, find the range of their mental age.

Answer:

It is given that for a group of years old children,

……………………………eq (i)

For a group of years old children, years

Putting this value of in (i),

Thus, the range of mental age of the group of years old children is

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